Amino acid dipepetide frequency for Sphingomonas sp. Leaf412

Apart from single amino acid frequencies one can also calculate so called amino acid dipeptide frequency.

There is 400 possibilites (441 if we consider Xaa as additional 21st amino acid representing all non-standard or unknown amino acids). Thus, if the dipeptides would be present randomly in proteins each amino acid dipeptide should be present with 0.25% frequency. As it is not the case in the nature, for better visablity all more than expected dipepetides are marked by red, and those which are underrepresented are marked by blue in the table.

All values are presented as per milles (‰), therefore need to be multiplied by 10-3.

For more information see sequence space article on Wikipedia.

AlaCysAspGluPheGlyHisIleLysLeuMetAsnProGlnArgSerThrValTrpTyrXaa
Ala
24.482AlaAla: 24.482 ± 0.297
1.144AlaCys: 1.144 ± 0.039
9.164AlaAsp: 9.164 ± 0.11
6.895AlaGlu: 6.895 ± 0.098
4.742AlaPhe: 4.742 ± 0.07
13.63AlaGly: 13.63 ± 0.126
2.497AlaHis: 2.497 ± 0.057
7.274AlaIle: 7.274 ± 0.088
3.756AlaLys: 3.756 ± 0.071
14.654AlaLeu: 14.654 ± 0.157
4.24AlaMet: 4.24 ± 0.072
2.927AlaAsn: 2.927 ± 0.063
7.444AlaPro: 7.444 ± 0.108
4.519AlaGln: 4.519 ± 0.064
12.01AlaArg: 12.01 ± 0.143
5.807AlaSer: 5.807 ± 0.083
9.052AlaThr: 9.052 ± 0.115
10.225AlaVal: 10.225 ± 0.106
1.849AlaTrp: 1.849 ± 0.048
2.537AlaTyr: 2.537 ± 0.049
0.0AlaXaa: 0.0 ± 0.0
Cys
0.953CysAla: 0.953 ± 0.031
0.082CysCys: 0.082 ± 0.01
0.52CysAsp: 0.52 ± 0.022
0.293CysGlu: 0.293 ± 0.018
0.247CysPhe: 0.247 ± 0.019
0.806CysGly: 0.806 ± 0.033
0.158CysHis: 0.158 ± 0.013
0.313CysIle: 0.313 ± 0.019
0.102CysLys: 0.102 ± 0.01
0.575CysLeu: 0.575 ± 0.026
0.118CysMet: 0.118 ± 0.011
0.159CysAsn: 0.159 ± 0.012
0.381CysPro: 0.381 ± 0.022
0.145CysGln: 0.145 ± 0.013
0.55CysArg: 0.55 ± 0.027
0.328CysSer: 0.328 ± 0.019
0.356CysThr: 0.356 ± 0.02
0.567CysVal: 0.567 ± 0.025
0.093CysTrp: 0.093 ± 0.01
0.15CysTyr: 0.15 ± 0.012
0.0CysXaa: 0.0 ± 0.0
Asp
10.032AspAla: 10.032 ± 0.111
0.43AspCys: 0.43 ± 0.021
4.067AspAsp: 4.067 ± 0.078
3.13AspGlu: 3.13 ± 0.058
2.034AspPhe: 2.034 ± 0.052
6.76AspGly: 6.76 ± 0.093
1.398AspHis: 1.398 ± 0.041
2.611AspIle: 2.611 ± 0.055
1.225AspLys: 1.225 ± 0.043
6.085AspLeu: 6.085 ± 0.077
1.392AspMet: 1.392 ± 0.04
1.151AspAsn: 1.151 ± 0.036
4.029AspPro: 4.029 ± 0.066
1.549AspGln: 1.549 ± 0.039
6.098AspArg: 6.098 ± 0.072
1.956AspSer: 1.956 ± 0.048
3.093AspThr: 3.093 ± 0.058
4.955AspVal: 4.955 ± 0.073
1.164AspTrp: 1.164 ± 0.042
1.602AspTyr: 1.602 ± 0.044
0.0AspXaa: 0.0 ± 0.0
Glu
7.13GluAla: 7.13 ± 0.116
0.261GluCys: 0.261 ± 0.018
2.396GluAsp: 2.396 ± 0.057
2.51GluGlu: 2.51 ± 0.074
1.232GluPhe: 1.232 ± 0.04
4.107GluGly: 4.107 ± 0.071
0.899GluHis: 0.899 ± 0.039
2.221GluIle: 2.221 ± 0.047
1.522GluLys: 1.522 ± 0.044
4.091GluLeu: 4.091 ± 0.071
1.235GluMet: 1.235 ± 0.037
1.026GluAsn: 1.026 ± 0.034
2.324GluPro: 2.324 ± 0.049
1.67GluGln: 1.67 ± 0.044
4.95GluArg: 4.95 ± 0.081
1.776GluSer: 1.776 ± 0.038
2.71GluThr: 2.71 ± 0.05
3.376GluVal: 3.376 ± 0.06
0.715GluTrp: 0.715 ± 0.027
0.886GluTyr: 0.886 ± 0.028
0.0GluXaa: 0.0 ± 0.0
Phe
5.102PheAla: 5.102 ± 0.079
0.274PheCys: 0.274 ± 0.018
2.765PheAsp: 2.765 ± 0.054
1.63PheGlu: 1.63 ± 0.041
1.141PhePhe: 1.141 ± 0.037
3.521PheGly: 3.521 ± 0.073
0.667PheHis: 0.667 ± 0.027
1.075PheIle: 1.075 ± 0.034
0.627PheLys: 0.627 ± 0.029
2.967PheLeu: 2.967 ± 0.067
0.666PheMet: 0.666 ± 0.029
0.835PheAsn: 0.835 ± 0.035
1.472PhePro: 1.472 ± 0.039
0.805PheGln: 0.805 ± 0.028
2.396PheArg: 2.396 ± 0.049
1.562PheSer: 1.562 ± 0.045
1.903PheThr: 1.903 ± 0.042
2.817PheVal: 2.817 ± 0.061
0.45PheTrp: 0.45 ± 0.022
0.816PheTyr: 0.816 ± 0.029
0.0PheXaa: 0.0 ± 0.0
Gly
11.66GlyAla: 11.66 ± 0.128
0.763GlyCys: 0.763 ± 0.027
5.791GlyAsp: 5.791 ± 0.089
4.61GlyGlu: 4.61 ± 0.071
3.618GlyPhe: 3.618 ± 0.054
9.009GlyGly: 9.009 ± 0.144
1.869GlyHis: 1.869 ± 0.047
4.41GlyIle: 4.41 ± 0.075
2.783GlyLys: 2.783 ± 0.062
8.275GlyLeu: 8.275 ± 0.097
2.327GlyMet: 2.327 ± 0.052
2.172GlyAsn: 2.172 ± 0.057
3.694GlyPro: 3.694 ± 0.057
2.788GlyGln: 2.788 ± 0.059
7.379GlyArg: 7.379 ± 0.095
4.264GlySer: 4.264 ± 0.074
5.415GlyThr: 5.415 ± 0.092
7.276GlyVal: 7.276 ± 0.095
1.756GlyTrp: 1.756 ± 0.044
2.43GlyTyr: 2.43 ± 0.057
0.0GlyXaa: 0.0 ± 0.0
His
2.707HisAla: 2.707 ± 0.064
0.183HisCys: 0.183 ± 0.013
1.37HisAsp: 1.37 ± 0.045
0.893HisGlu: 0.893 ± 0.027
0.698HisPhe: 0.698 ± 0.029
1.979HisGly: 1.979 ± 0.043
0.591HisHis: 0.591 ± 0.025
0.676HisIle: 0.676 ± 0.025
0.35HisLys: 0.35 ± 0.02
1.803HisLeu: 1.803 ± 0.046
0.358HisMet: 0.358 ± 0.019
0.35HisAsn: 0.35 ± 0.02
1.318HisPro: 1.318 ± 0.04
0.444HisGln: 0.444 ± 0.022
1.642HisArg: 1.642 ± 0.042
0.698HisSer: 0.698 ± 0.029
0.63HisThr: 0.63 ± 0.03
1.647HisVal: 1.647 ± 0.037
0.338HisTrp: 0.338 ± 0.019
0.471HisTyr: 0.471 ± 0.021
0.0HisXaa: 0.0 ± 0.0
Ile
8.233IleAla: 8.233 ± 0.101
0.31IleCys: 0.31 ± 0.019
3.877IleAsp: 3.877 ± 0.063
2.745IleGlu: 2.745 ± 0.057
1.113IlePhe: 1.113 ± 0.041
4.769IleGly: 4.769 ± 0.079
0.79IleHis: 0.79 ± 0.028
1.227IleIle: 1.227 ± 0.038
0.814IleLys: 0.814 ± 0.029
3.542IleLeu: 3.542 ± 0.054
0.656IleMet: 0.656 ± 0.028
0.957IleAsn: 0.957 ± 0.038
1.985IlePro: 1.985 ± 0.047
0.965IleGln: 0.965 ± 0.036
3.14IleArg: 3.14 ± 0.062
1.672IleSer: 1.672 ± 0.043
2.002IleThr: 2.002 ± 0.046
4.537IleVal: 4.537 ± 0.068
0.443IleTrp: 0.443 ± 0.022
0.766IleTyr: 0.766 ± 0.032
0.0IleXaa: 0.0 ± 0.0
Lys
3.452LysAla: 3.452 ± 0.067
0.112LysCys: 0.112 ± 0.01
1.324LysAsp: 1.324 ± 0.04
1.012LysGlu: 1.012 ± 0.033
0.64LysPhe: 0.64 ± 0.029
2.304LysGly: 2.304 ± 0.06
0.413LysHis: 0.413 ± 0.023
0.956LysIle: 0.956 ± 0.034
0.86LysLys: 0.86 ± 0.043
2.58LysLeu: 2.58 ± 0.056
0.595LysMet: 0.595 ± 0.028
0.543LysAsn: 0.543 ± 0.022
1.597LysPro: 1.597 ± 0.042
0.68LysGln: 0.68 ± 0.027
1.917LysArg: 1.917 ± 0.048
1.177LysSer: 1.177 ± 0.04
1.329LysThr: 1.329 ± 0.041
1.944LysVal: 1.944 ± 0.051
0.353LysTrp: 0.353 ± 0.018
0.503LysTyr: 0.503 ± 0.024
0.0LysXaa: 0.0 ± 0.0
Leu
14.605LeuAla: 14.605 ± 0.158
0.65LeuCys: 0.65 ± 0.026
6.364LeuAsp: 6.364 ± 0.086
4.051LeuGlu: 4.051 ± 0.074
3.304LeuPhe: 3.304 ± 0.065
8.084LeuGly: 8.084 ± 0.102
1.799LeuHis: 1.799 ± 0.049
3.983LeuIle: 3.983 ± 0.065
2.581LeuLys: 2.581 ± 0.06
9.223LeuLeu: 9.223 ± 0.154
1.927LeuMet: 1.927 ± 0.041
2.159LeuAsn: 2.159 ± 0.053
5.737LeuPro: 5.737 ± 0.08
2.009LeuGln: 2.009 ± 0.048
7.031LeuArg: 7.031 ± 0.088
5.697LeuSer: 5.697 ± 0.072
5.747LeuThr: 5.747 ± 0.086
7.506LeuVal: 7.506 ± 0.112
1.216LeuTrp: 1.216 ± 0.043
1.909LeuTyr: 1.909 ± 0.043
0.0LeuXaa: 0.0 ± 0.0
Met
3.244MetAla: 3.244 ± 0.058
0.142MetCys: 0.142 ± 0.011
1.023MetAsp: 1.023 ± 0.03
0.954MetGlu: 0.954 ± 0.033
0.639MetPhe: 0.639 ± 0.027
1.767MetGly: 1.767 ± 0.042
0.376MetHis: 0.376 ± 0.018
1.16MetIle: 1.16 ± 0.037
0.814MetLys: 0.814 ± 0.027
2.506MetLeu: 2.506 ± 0.056
0.618MetMet: 0.618 ± 0.026
0.626MetAsn: 0.626 ± 0.027
1.449MetPro: 1.449 ± 0.041
0.668MetGln: 0.668 ± 0.023
1.946MetArg: 1.946 ± 0.044
1.155MetSer: 1.155 ± 0.035
1.983MetThr: 1.983 ± 0.045
1.637MetVal: 1.637 ± 0.046
0.245MetTrp: 0.245 ± 0.014
0.267MetTyr: 0.267 ± 0.016
0.0MetXaa: 0.0 ± 0.0
Asn
3.043AsnAla: 3.043 ± 0.064
0.183AsnCys: 0.183 ± 0.014
1.273AsnAsp: 1.273 ± 0.037
0.928AsnGlu: 0.928 ± 0.034
0.808AsnPhe: 0.808 ± 0.039
2.107AsnGly: 2.107 ± 0.055
0.389AsnHis: 0.389 ± 0.017
1.013AsnIle: 1.013 ± 0.036
0.45AsnLys: 0.45 ± 0.024
2.182AsnLeu: 2.182 ± 0.059
0.441AsnMet: 0.441 ± 0.019
0.552AsnAsn: 0.552 ± 0.033
1.543AsnPro: 1.543 ± 0.048
0.573AsnGln: 0.573 ± 0.025
1.745AsnArg: 1.745 ± 0.035
0.954AsnSer: 0.954 ± 0.041
1.028AsnThr: 1.028 ± 0.039
1.855AsnVal: 1.855 ± 0.047
0.331AsnTrp: 0.331 ± 0.019
0.602AsnTyr: 0.602 ± 0.03
0.0AsnXaa: 0.0 ± 0.0
Pro
8.457ProAla: 8.457 ± 0.126
0.306ProCys: 0.306 ± 0.016
4.292ProAsp: 4.292 ± 0.08
2.841ProGlu: 2.841 ± 0.059
1.839ProPhe: 1.839 ± 0.047
5.207ProGly: 5.207 ± 0.075
1.021ProHis: 1.021 ± 0.035
2.252ProIle: 2.252 ± 0.046
1.251ProLys: 1.251 ± 0.038
5.009ProLeu: 5.009 ± 0.082
1.164ProMet: 1.164 ± 0.031
1.071ProAsn: 1.071 ± 0.034
2.916ProPro: 2.916 ± 0.073
1.465ProGln: 1.465 ± 0.035
3.538ProArg: 3.538 ± 0.058
2.503ProSer: 2.503 ± 0.048
2.769ProThr: 2.769 ± 0.051
4.779ProVal: 4.779 ± 0.083
0.702ProTrp: 0.702 ± 0.025
1.094ProTyr: 1.094 ± 0.033
0.0ProXaa: 0.0 ± 0.0
Gln
3.953GlnAla: 3.953 ± 0.059
0.171GlnCys: 0.171 ± 0.013
1.324GlnAsp: 1.324 ± 0.042
1.137GlnGlu: 1.137 ± 0.034
0.934GlnPhe: 0.934 ± 0.034
2.343GlnGly: 2.343 ± 0.055
0.51GlnHis: 0.51 ± 0.023
1.251GlnIle: 1.251 ± 0.036
0.708GlnLys: 0.708 ± 0.028
2.602GlnLeu: 2.602 ± 0.061
0.697GlnMet: 0.697 ± 0.028
0.627GlnAsn: 0.627 ± 0.026
1.534GlnPro: 1.534 ± 0.039
0.979GlnGln: 0.979 ± 0.036
2.489GlnArg: 2.489 ± 0.054
1.35GlnSer: 1.35 ± 0.037
1.393GlnThr: 1.393 ± 0.042
2.422GlnVal: 2.422 ± 0.05
0.362GlnTrp: 0.362 ± 0.022
0.556GlnTyr: 0.556 ± 0.026
0.0GlnXaa: 0.0 ± 0.0
Arg
11.085ArgAla: 11.085 ± 0.132
0.469ArgCys: 0.469 ± 0.023
5.623ArgAsp: 5.623 ± 0.078
3.839ArgGlu: 3.839 ± 0.071
3.284ArgPhe: 3.284 ± 0.06
5.913ArgGly: 5.913 ± 0.085
1.854ArgHis: 1.854 ± 0.056
4.263ArgIle: 4.263 ± 0.063
1.6ArgLys: 1.6 ± 0.042
8.655ArgLeu: 8.655 ± 0.119
2.178ArgMet: 2.178 ± 0.044
1.687ArgAsn: 1.687 ± 0.049
4.189ArgPro: 4.189 ± 0.073
2.278ArgGln: 2.278 ± 0.047
7.182ArgArg: 7.182 ± 0.096
3.357ArgSer: 3.357 ± 0.059
4.126ArgThr: 4.126 ± 0.059
6.003ArgVal: 6.003 ± 0.089
1.385ArgTrp: 1.385 ± 0.039
1.992ArgTyr: 1.992 ± 0.051
0.0ArgXaa: 0.0 ± 0.0
Ser
5.872SerAla: 5.872 ± 0.074
0.291SerCys: 0.291 ± 0.018
2.669SerAsp: 2.669 ± 0.056
1.737SerGlu: 1.737 ± 0.043
1.801SerPhe: 1.801 ± 0.054
4.769SerGly: 4.769 ± 0.088
0.796SerHis: 0.796 ± 0.029
2.291SerIle: 2.291 ± 0.055
0.95SerLys: 0.95 ± 0.035
4.193SerLeu: 4.193 ± 0.078
0.967SerMet: 0.967 ± 0.033
1.142SerAsn: 1.142 ± 0.041
2.763SerPro: 2.763 ± 0.054
1.12SerGln: 1.12 ± 0.041
3.256SerArg: 3.256 ± 0.065
2.126SerSer: 2.126 ± 0.062
2.583SerThr: 2.583 ± 0.055
3.372SerVal: 3.372 ± 0.064
0.619SerTrp: 0.619 ± 0.027
1.093SerTyr: 1.093 ± 0.04
0.0SerXaa: 0.0 ± 0.0
Thr
7.433ThrAla: 7.433 ± 0.109
0.348ThrCys: 0.348 ± 0.021
3.3ThrAsp: 3.3 ± 0.061
1.973ThrGlu: 1.973 ± 0.048
1.851ThrPhe: 1.851 ± 0.046
5.847ThrGly: 5.847 ± 0.096
0.93ThrHis: 0.93 ± 0.036
3.101ThrIle: 3.101 ± 0.064
1.271ThrLys: 1.271 ± 0.037
6.155ThrLeu: 6.155 ± 0.076
1.215ThrMet: 1.215 ± 0.034
1.223ThrAsn: 1.223 ± 0.04
3.726ThrPro: 3.726 ± 0.058
1.542ThrGln: 1.542 ± 0.041
4.096ThrArg: 4.096 ± 0.07
2.446ThrSer: 2.446 ± 0.059
3.228ThrThr: 3.228 ± 0.091
4.795ThrVal: 4.795 ± 0.076
0.749ThrTrp: 0.749 ± 0.028
1.201ThrTyr: 1.201 ± 0.036
0.0ThrXaa: 0.0 ± 0.0
Val
13.158ValAla: 13.158 ± 0.158
0.49ValCys: 0.49 ± 0.024
5.223ValAsp: 5.223 ± 0.067
4.37ValGlu: 4.37 ± 0.085
2.214ValPhe: 2.214 ± 0.05
6.211ValGly: 6.211 ± 0.088
1.358ValHis: 1.358 ± 0.04
3.11ValIle: 3.11 ± 0.059
1.818ValLys: 1.818 ± 0.055
6.956ValLeu: 6.956 ± 0.094
1.697ValMet: 1.697 ± 0.04
1.851ValAsn: 1.851 ± 0.054
4.606ValPro: 4.606 ± 0.067
2.005ValGln: 2.005 ± 0.047
5.951ValArg: 5.951 ± 0.091
3.773ValSer: 3.773 ± 0.063
5.132ValThr: 5.132 ± 0.085
6.732ValVal: 6.732 ± 0.092
0.877ValTrp: 0.877 ± 0.03
1.378ValTyr: 1.378 ± 0.038
0.0ValXaa: 0.0 ± 0.0
Trp
1.498TrpAla: 1.498 ± 0.043
0.107TrpCys: 0.107 ± 0.01
0.788TrpAsp: 0.788 ± 0.029
0.545TrpGlu: 0.545 ± 0.023
0.542TrpPhe: 0.542 ± 0.024
1.032TrpGly: 1.032 ± 0.033
0.363TrpHis: 0.363 ± 0.019
0.664TrpIle: 0.664 ± 0.026
0.401TrpLys: 0.401 ± 0.02
1.597TrpLeu: 1.597 ± 0.047
0.343TrpMet: 0.343 ± 0.02
0.391TrpAsn: 0.391 ± 0.022
0.732TrpPro: 0.732 ± 0.03
0.554TrpGln: 0.554 ± 0.025
1.579TrpArg: 1.579 ± 0.043
0.797TrpSer: 0.797 ± 0.031
0.954TrpThr: 0.954 ± 0.032
0.838TrpVal: 0.838 ± 0.029
0.294TrpTrp: 0.294 ± 0.02
0.268TrpTyr: 0.268 ± 0.018
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.75TyrAla: 2.75 ± 0.051
0.181TyrCys: 0.181 ± 0.012
1.61TyrAsp: 1.61 ± 0.046
0.945TyrGlu: 0.945 ± 0.034
0.809TyrPhe: 0.809 ± 0.029
2.122TyrGly: 2.122 ± 0.051
0.469TyrHis: 0.469 ± 0.023
0.689TyrIle: 0.689 ± 0.025
0.405TyrLys: 0.405 ± 0.021
1.932TyrLeu: 1.932 ± 0.049
0.383TyrMet: 0.383 ± 0.02
0.551TyrAsn: 0.551 ± 0.025
1.037TyrPro: 1.037 ± 0.037
0.585TyrGln: 0.585 ± 0.026
2.066TyrArg: 2.066 ± 0.045
1.012TyrSer: 1.012 ± 0.036
0.998TyrThr: 0.998 ± 0.038
1.629TyrVal: 1.629 ± 0.045
0.345TyrTrp: 0.345 ± 0.02
0.556TyrTyr: 0.556 ± 0.028
0.0TyrXaa: 0.0 ± 0.0
Xaa
0.0XaaAla: 0.0 ± 0.0
0.0XaaCys: 0.0 ± 0.0
0.0XaaAsp: 0.0 ± 0.0
0.0XaaGlu: 0.0 ± 0.0
0.0XaaPhe: 0.0 ± 0.0
0.0XaaGly: 0.0 ± 0.0
0.0XaaHis: 0.0 ± 0.0
0.0XaaIle: 0.0 ± 0.0
0.0XaaLys: 0.0 ± 0.0
0.0XaaLeu: 0.0 ± 0.0
0.0XaaMet: 0.0 ± 0.0
0.0XaaAsn: 0.0 ± 0.0
0.0XaaPro: 0.0 ± 0.0
0.0XaaGln: 0.0 ± 0.0
0.0XaaArg: 0.0 ± 0.0
0.0XaaSer: 0.0 ± 0.0
0.0XaaThr: 0.0 ± 0.0
0.0XaaVal: 0.0 ± 0.0
0.0XaaTrp: 0.0 ± 0.0
0.0XaaTyr: 0.0 ± 0.0
0.0XaaXaa: 0.0 ± 0.0
Statistics based on 3084 proteins (996500 amino acids)

Note: The error has been estimated with the bootstraping (x100) at the protein level

Above dipeptide statistics (among other stats for this proteome) you can download from this CSV file
See this proteome in: uniprot_link
Proteome-pI is available under Creative Commons Attribution-NoDerivs license, for more details see here

Reference: Kozlowski LP. Proteome-pI 2.0: Proteome Isoelectric Point Database Update. Nucleic Acids Res. 2021, doi: 10.1093/nar/gkab944 Contact: Lukasz P. Kozlowski